https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118353
--- Comment #5 from Mark Wielaard <mark at gcc dot gnu.org> --- One difference might be how many cores are used for the builds. The more cores how more sensitive they are for parallelism bottlenecks. And riscv (was) kind of special in that there were just a handful of files that could take a couple of hours to build. With the last patch there seems to be none that takes more than 30 minutes. The full bootstrap builders that sourceware has are here: https://builder.sourceware.org/buildbot/#/builders?tags=gcc-full amd64 make -j12 arm64 make -j16 riscv make -j64 sparc make -j64 Those do a bootstrap plus check in a couple of hours. Only the riscv one shows a big difference (8-9 hours to 3-4 hours). But it seems most of them had slightly longer build times end of November/December than in January. It isn't super clear though, the individual build timess differ a lot (partly because of the use of ccache, which can speed up stage 1 a lot).
